Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9983237 | Lightning current measuring device and lightning current measuring method | Tatsufumi Aoi, Yoichiro Tsumura, Yutaka Kikuchihara | 2018-05-29 |
| 7786719 | Optical sensor, optical current sensor and optical voltage sensor | Kazuomi Shirakawa | 2010-08-31 |
| 7655900 | Intensity modulation type optical sensor and optical current/voltage sensor | Kazuomi Shirakawa | 2010-02-02 |
| 7589515 | Method for reducing temperature-dependent error in photocurrent sensor, and photocurrent sensor device | Kazuomi Shirakawa | 2009-09-15 |
| 7176671 | Current measuring device | Yoshiharu Hiroki, Yoshihiro Konno, Masaru Sasaki | 2007-02-13 |
| 6976436 | Synthetic resin pallet | Junro Sugihara, Tomoyuki Dobashi, Soshi Yamamoto | 2005-12-20 |
| 6281137 | Chemical treatment apparatus and chemical treatment method | Hayato Iwamoto | 2001-08-28 |
| 6156153 | Chemical treatment apparatus and chemical treatment method | Hayato Iwamoto | 2000-12-05 |
| 6138582 | Synthetic resin pallet and manufacturing method therefor | Mitsuru Fujii, Tomoyuki Dobashi, Junro Sugihara | 2000-10-31 |
| 6087194 | Composite unit of optical semiconductor device and supporting substrate and method for mounting optical semiconductor device on supporting substrate | Hisao Matsukura, Yasuhiko Kudou, Hajime Hotta, Akio Hirakawa, Masaki Sugawara +1 more | 2000-07-11 |
| 5585915 | Light detecting device | Wataru Watanabe, Akira Tanaka, Yuji Kojima, Kiyoshi Fujii, Mamoru Yamada | 1996-12-17 |
| 5513285 | Compact optical switching module including thin-film heaters and trimmed thick-film fixed resistors | Toshiyuki Kawashima, Jiro Utsunomiya, Iida Saburo, Ryo Nagase, Akira Himeno +4 more | 1996-04-30 |
| 5153427 | Optical d.c. voltage transformer | Genji Takahashi, Kazuyuki Seino, Sadamu Saito, Tadashi Sato, Etsunori Mori +1 more | 1992-10-06 |